// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: prod-CharacterEscape
description: >
  Null character escape is permitted in Unicode patterns.
info: |
  CharacterEscape[U] ::
    ControlEscape
    c ControlLetter
    0 [lookahead ∉ DecimalDigit]
    HexEscapeSequence
    RegExpUnicodeEscapeSequence[?U]
    IdentityEscape[?U]

  DecimalDigit :: one of
    0 1 2 3 4 5 6 7 8 9
---*/

function Test() {
    var nullChar = String.fromCharCode(0);
    assert.sameValue(/\0/u.exec(nullChar)[0], nullChar);
    assert(/^\0a$/u.test('\0a'));
    assert.sameValue('\x00②'.match(/\0②/u)[0], '\x00②');
    assert.sameValue('\u0000፬'.search(/\0፬$/u), 0);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_TEST; i++) {
    Test();
}
